still fighting diablo tune

[m.j.lecki]

has anyone used the "new" slp diablo programmer?
still can't get my tune down with just simple bolt-on stuff.throttle response
not good.at shift points the car "burbles"have tried to retard timing has helped some.also richin up mixture but no real results to the good.talked to
slp ..depends on who you talk too...
02 ws6 hooker lt's ory maf/slp and stock 180therm 4l60e trans..air lid...anyone know of a baseline to start on modif the tune with the diablo?
std tune mkes the car fall flat under 2200 r's

[2001NBMZ28]

I got a custom tune from RWTD, but car worked fine initially with the predator tune. You running the stock MAF? Maybe their tune assumes that? Don't know if this will help but here's a link that might help and a TTT for you. www.ls1tech.com/forums/showpost.php?p=2652650

[99 Formula]

i would go to a local reputable dyno shop and just get it over with...

[0rion]

I would swap out that maf for your stock one and start over. What are your Ltrims, what's your wot timing, and where are your shift points?

[m.j.lecki]

thanks for the input quick info for you..i don't have detailed specs
i have seen wot time as high as 34 deg tried backin it down to a point better
but lost a lot of throttle response lft's have ranged from -3.87 to +7.38???
all seems well out of wack these come from the diablo reradings

[jimmyblue]

You just don't have the fine-grained control
over spark and fuel that you want, once you
depart from GM's stock hardware and tune.
The RWTD tunes should be better but every
time you change airflow you have to go back
to it. When I was using the Predator I would
see PE changes and fuel changes push on
closed loop trims etc., indicating there is a
sort of "blanket" modification of the maps but
you do not necessarily want this.

Also the Predator does nothing much with
part throttle shiftpoints nor the stupidity in
the PT/WOT transition (like no kickdown above
10MPH, except WOT) so you will not be able to
make it stay properly in-powerband at anything
except WOT, unless you request it done.

If you're seeing positive fuel trims that's not coming
from the user params, it's more likely from header
exhaust gas cooling, giving you bent fuel trims and
this may also have to do with your low RPM
"flatness" as the stock fuel trim cell map lumps
everything below 2500 RPM into one cell per MAP
range, your sleepy idle O2 response messes up
low cruise as well, etc.

This general lack of detail access is why my
Predator has mold on it. There's a lot of details
that matter, and you can't even see or tell the
man what you want changed; he has to guess,
and later on you both will have to guess again.

And good luck with the "technical" people at SLP.